1 Department of Anesthesiology, The Ohio State University Wexner Medical Center, Columbus, OH. Electronic address: [email protected].
2 Department of Anesthesiology, The Ohio State University Wexner Medical Center, Columbus, OH; The Ohio State University College of Medicine, Columbus, OH.
3 Department of Anesthesiology, The Ohio State University Wexner Medical Center, Columbus, OH.
4 Department of Anesthesiology, Emory University School of Medicine, Atlanta, GA.